The change in mhr is the same from ages 20 to 26 as it is from ages 40 to 46

Answers

Answer 1
Answer: The change of maximum heart rate (MHR) is the same from ages 20 to 26. At age 20, a person has an MHR of 200 bpm and at the age of 26, a person has an MHR of 194 bpm, there's a 4 bpm difference. While at the age of 40, a person has an MHR of 185 bpm and at the age of 46, a person has an MHR of 182 bpm, there's a difference 4 bpm. Therefore, the change in MHR for the same range (20-26) and (40-46) are the same. 

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Why do cells need a constant supply of energy

Answers

All cells need energy to stay alive. All cells must release chemical energy in the bonds.

The stars with the coolest surface temperature fall into which spectral class? A. A
B. B
C. G
D. K
E. M
F. O

Answers

The answer is actually E, M is the coolest spectral class.

Answer:

Your answer is E. M hopefully this helps!

What are the 2 parts of mitochondria

Answers

the intermembrane space (the space between the outer and inner membranes), the inner mitochondrial membrane, the cristae space (formed by infoldings of the inner membrane), and. the matrix (space within the inner membrane).
Cristae and matrix is 2 parts

Match each point of view with the benefit it has in telling a story.first person
The reader can learn about several
characters' thoughts.
It gives a personal feeling as the
narrator shares his or her thoughts.
third person
second person
The reader feels like he or she is being
addressed by the writer

Answers

Answer:

Third Person-The reader can learn about several characters thoughts.

First Person-It gives a personal feeling as the narrator shares his or her thoughts.

Second Person: The reader feels like he or she is being addressed by the writer.

Explanation:

Which of the following is true about the phosphorylation of proteins?1. Phosphoryation always activates enzymes.
2. Proteins are usually phosphorylated at amino acids that have hydroxyl group-containing side chains.
3. Phosphorylation always decreases the activity of the enzyme.
4. Proteins are usually phosphorylated at the N terminus of the chain.
5. Phosphorylation of proteins is catalyzed by phosphatases.

Answers

Answer:

Proteins are usually phosphorylated at amino acids that have hydroxyl group- containing side chains. Other statements are false. Thus, Option 2 is only true.

Explanation:

Proteins are usually phosphorylated at amino acids that have hydroxyl group- containing side chains which are Serine, Threonine and Tyrosine. Thus, the statement is true.


Phosphorylation can enhance or inhibit the activity of an enzyme but cannot activate enzymes. Therefore, the statement is false.

Phosphorylation can enhance or inhibit the activity of an enzyme but cannot activate enzymes. Thus, phosphorylation does not always decreases the activity of an enzyme.

Phosphorylation at the termini I.e., N terminus of a protein chain is relatively rare and usually involves other types of modification.

Phosphorylation of proteins is catalysed by enzymes called protein kinases. Thus, this statement is also false.


To know more about Phosphorylation,

brainly.com/question/10332475

Final answer:

Phosphorylation of proteins can either activate or inhibit protein function, depending on the specific context and the protein involved. Proteins are usually phosphorylated at amino acids that have hydroxyl group-containing side chains, such as serine, threonine, and tyrosine.

Explanation:

Phosphorylation is a common post-translational modification of proteins, where a phosphate group is added to specific amino acid residues. It is catalyzed by enzymes called kinases, which transfer a phosphate group from ATP to the target protein. Proteins can be phosphorylated at various amino acids, including serine, threonine, and tyrosine. This modification plays a crucial role in regulating protein function and cellular processes.

Contrary to statement 1, phosphorylation does not always activate enzymes. It can have diverse effects on protein activity, stability, localization, and interactions with other molecules. Depending on the specific context and the protein involved, phosphorylation can either activate or inhibit protein function.

Statement 2 is true. Proteins are usually phosphorylated at amino acids that have hydroxyl group-containing side chains, such as serine, threonine, and tyrosine.

Statement 3 is false. Phosphorylation does not always decrease the activity of the enzyme. It can have both activating and inhibitory effects on protein function.

Statement 4 is false. Proteins are not usually phosphorylated at the N terminus of the chain. Phosphorylation can occur at various amino acids throughout the protein sequence.

Statement 5 is false. Phosphorylation of proteins is catalyzed by enzymes called kinases, not phosphatases. Phosphatases are responsible for removing phosphate groups, reversing the phosphorylation.

Learn more about phosphorylation of proteins here:

brainly.com/question/13947490

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What are convection currents

Answers

Answer:

Convection is the transfer of heat due to the bulk movement of molecules within fluids, including molten rock.

Explanation:

(a current in a fluid that results from convection.)

Convection currents transfer heat from one place to another by mass motion of a fluid such as water, air or molten rock. The heat transfer function of convection currents drives the earth’s ocean currents, atmospheric weather and geology. Convection is different from conduction, which is a transfer of heat between substances in direct contact with each other.